Aida Yurume, a ronin student, arrives in Tokyo to study for her university entrance exams. However, she finds herself in an unexpected, run-down district that hardly resembles the vibrant Tokyo she expected. Living in the same apartment are Kawano Sae, a seasoned ronin known for his serious demeanor, Tanaka Kumi, a seemingly naive girl, and Matsukishi, a youthful man with a mature presence. Together, they navigate the leisurely and cozy routine of preparing for their university futures.